2. 外语
  3. ______ several times, they need some encouragement.

______ several times, they need some encouragement.

admin2010-01-15  46
问题 ______ several times, they need some encouragement.
选项 A、Being failed
B、Having failed
C、To fail
D、To be failed
答案B
解析 现在分词作状语时，与句子主语应为逻辑主谓关系；过去分词作状语时，和句子主语应为逻辑动宾关系，否则就形成了悬垂分词结构，如：(×)Whistling the merry tune，the tire was fixed by Jack．(whistle与句子主语没有逻辑关系，可将主句改为Jack fixed the tire，这样Jack和whistle就构成逻辑主谓关系)吹着欢快的口哨，杰克把轮胎修好了。
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